Matched context for impurity and lpg

The page lists matched contexts for impurity and lpg.

Share - impurity	Share - lpg	Phrase
3.81%	10.27%	gaseous [state] {impurity or lpg}
2.18%	13.62%	liquid [state] {impurity or lpg}
0.76%	1.02%	prevent {impurity or lpg} [perform operation]